I may ask you to send me a copy of your WatchList.xml file but also you may want to take a back up copy from time to time just in case. You may have carried out many optimisations and created a number of watch lists. All these are stored in this file and a back up copy is always a good idea even though the file should automatically be retained if, for example, you download a later version of SwingTrader.
Use Windows explorer to access the SwingTrader program (Start, My Computer, then click the "Folders" icon, click Local Disk (C:) then Program Files, then the 'SST' folder, then SST SwingTrader, then Yahoo, then general.)
You will see a file on the right hand side called WatchList.xml
Right click this file then click copy.
Right click on a place where you can find the file again - I suggest your Desktop - and click Paste.
Send me the WatchList.xml file as an attachment to an email together with a detailed description of the problem